Alice Smith, born in Washington D.C., is, on the evidence of her solo debut, “For Lovers, Dreamers & Me” (BBE Records), the most promising female singer-songwriter to go her own enrapturing way in a very long time. Her voice, with its four-octave range, is luscious and powerful and nuanced and finely sensitive to rhythm. Yet it never makes a cult of its own abilities; for all its fantastic manners, Smith’s voice gets on down the road. Sometimes she sings with a booming intensity, yet Smith never loses the unlearnable balance and poise that separates good singers from great ones. And her basic attitudes, which are audible in every unforced phrase she negotiates, are all her own.